丁集煤矿B组煤瓦斯综合治理方案探讨

Discussion on Comprehensive Gas Control Scheme in Group B Coal of Dingji Coal Mine

丁集煤矿B组煤为近距离煤层群开采,煤层埋藏深、瓦斯含量大,系统巷道布置困难,瓦斯治理难度大。对比分析了矿区B组煤层瓦斯治理模式,结合矿井瓦斯赋存情况,选择5_(-1)煤作为B组煤开采的关键保护层,提出具有针对性的瓦斯综合治理方案,该方案有利于系统巷道及瓦斯治理巷道的布置,可实现B组煤层的一次性区域瓦斯治理,为矿井二水平延深工程开拓方式及主要巷道布置提供了参考依据。

Group B coal of Dingji Coal Mine is buried deep and contains high gas content, which is mined from close coal seam. The roadway layout of the system is difficult to choose and the gas is difficult to control. By comparing and analyzing the gas control model of coal seam B in this mining area, 5-1 coal seam was selected as the key protective layer for coal mining in group B of this mine according to the gas occurrence situation of this mine, and the targeted gas comprehensive control scheme was proposed. This scheme is advantageous to the roadway layout of gas control system, and can realize the one-time regional gas control of coal seam group B, which can provide reference for the way of engineering of extending in the second level and the layout of main roadway.